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Render sampled grid with colors and stuff!

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This commit is contained in:
Eryn Wells 2018-10-14 12:51:24 -07:00
parent 7694a641a0
commit 720e3b1b64
3 changed files with 55 additions and 82 deletions
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32
MetaballsKit/Renderer.swift
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@ -45,6 +45,7 @@ public class Renderer: NSObject, MTKViewDelegate {
delegate.field.setupMetal(withDevice: device)
delegate.marchingSquares.setupMetal(withDevice: device)
delegate.marchingSquares.populateGrid(withDevice: device)
delegate.marchingSquares.populateSamples(withDevice: device)
}
}
@ -207,6 +208,9 @@ public class Renderer: NSObject, MTKViewDelegate {
buffer.label = "Metaballs Command Buffer"
field.update()
if let ms = delegate?.marchingSquares {
ms.populateSamples(withDevice: device)
}
if self.pixelGeometry == nil {
self.pixelGeometry = self.pixelGeometry(forViewSize: view.drawableSize)
@ -215,24 +219,24 @@ public class Renderer: NSObject, MTKViewDelegate {
if let renderPass = view.currentRenderPassDescriptor {
// Render the per-pixel metaballs
if let pipeline = pixelPipeline,
let encoder = buffer.makeRenderCommandEncoder(descriptor: renderPass) {
encoder.label = "Pixel Render"
encoder.setRenderPipelineState(pipeline)
encoder.setVertexBytes(pixelGeometry, length: pixelGeometry.count * MemoryLayout<Vertex>.stride, index: 0)
encoder.setVertexBuffer(parametersBuffer, offset: 0, index: 1)
encoder.setFragmentBuffer(field.parametersBuffer, offset: 0, index: 0)
encoder.setFragmentBuffer(field.ballBuffer, offset: 0, index: 1)
encoder.drawPrimitives(type: .triangle, vertexStart: 0, vertexCount: 6)
encoder.endEncoding()
didEncode = true
}
// if let pipeline = pixelPipeline,
// let encoder = buffer.makeRenderCommandEncoder(descriptor: renderPass) {
// encoder.label = "Pixel Render"
// encoder.setRenderPipelineState(pipeline)
// encoder.setVertexBytes(pixelGeometry, length: pixelGeometry.count * MemoryLayout<Vertex>.stride, index: 0)
// encoder.setVertexBuffer(parametersBuffer, offset: 0, index: 1)
// encoder.setFragmentBuffer(field.parametersBuffer, offset: 0, index: 0)
// encoder.setFragmentBuffer(field.ballBuffer, offset: 0, index: 1)
// encoder.drawPrimitives(type: .triangle, vertexStart: 0, vertexCount: 6)
// encoder.endEncoding()
// didEncode = true
// }
if let marchingSquares = delegate?.marchingSquares {
// Render the marching squares version over top of the pixel version.
// We need our own render pass descriptor that specifies that we load the results of the previous pass to make this render pass appear on top of the other.
let pass = renderPass.copy() as! MTLRenderPassDescriptor
pass.colorAttachments[0].loadAction = .load
// pass.colorAttachments[0].loadAction = .load
if let pipeline = marchingSquaresPipeline,
let encoder = buffer.makeRenderCommandEncoder(descriptor: pass) {
encoder.label = "Marching Squares Grid Render"
@ -240,7 +244,7 @@ public class Renderer: NSObject, MTKViewDelegate {
encoder.setVertexBytes(Rect.geometry, length: MemoryLayout<Vertex>.stride * Rect.geometry.count, index: 0)
encoder.setVertexBuffer(marchingSquares.gridGeometry, offset: 0, index: 1)
encoder.setVertexBuffer(parametersBuffer, offset: 0, index: 2)
encoder.setTriangleFillMode(.lines)
encoder.setFragmentBuffer(marchingSquares.samplesBuffer, offset: 0, index: 0)
encoder.drawPrimitives(type: .triangle, vertexStart: 0, vertexCount: Rect.geometry.count, instanceCount: marchingSquares.samplesCount)
encoder.endEncoding()
didEncode = true